Who is the World's Greatest Popstar? It's one of life's burning questions but will be asked no more after Sunday, when the title holder will be announced.

4Music is nearing the end of its exciting series Rimmel London Presents The World’s Greatest Popstars and the battle is heating up! The title of world’s greatest popstar will be bestowed upon one member of pop royalty during the star-studded T4 Stars of 2009 event on November 29 at Earl’s Court, and 4Music is giving one lucky 3am.co.uk reader and a friend the chance to be there.

To be in with a chance of winning, simply answer the following question and email it to pleasepickme@3am.co.uk by 5pm Friday November 27, ensuring you include a personal telephone number so winners can be notified that evening:

What is Robbie Williams’ new comeback album called?

a) Video Killed the Radio Star

b) Video Killed the Reality Star

c) Reality Killed the Video Star

Don't miss out, if you are not lucky enough to win these tickets, check out tickets on T4's website .